394 Neil) Publications. 



evident that if really a comet, it is one of first-rate magnitude ; and 

 if it be not one, it is some phenomenon beyond the earth's atmo- 

 sphere of a nature even yet more remarkable. 



I have the honour to be, Sir, 



Your obedient servant, 



J. F. W. Hekschel. 



CoLLiNGWooD, March 19(A. 



P.S. Had there been any post last night, this communication 

 would have been made a day earlier. 



8 P.M., March 19. — The tail of the comet, for such it must now 

 assuredly be, is again visible, though much obscured by haze, and 

 holding very nearly the same position ! 



NEW PUBLICATIONS. 



The following publications have been received : — 



1. Essai sur les Glaciers et sur le terrain Erratique du Basin du 

 Rhone, par Jean de Charpentier. One volume 8vo, pp. 363. With 

 Maps and Plates. 1841. From the Author. This valuable work is already 

 well known in Britain, through the medium of thi^ Journal and the writings 

 of our geologists. 



2. The Year-Book of Facts in Science and Art, exhibiting the most 

 important discoveries and improvements of the past year. 12mo pp. 

 283. With numerous Engravings. London, Tilt and Bogue. 18-±3. 

 From thr Publisher. 



3. Travels in New Zealand ; with Contributions to the Geography, 

 Geology, Botany, and Natural History of that country ; by Ernest 

 DiefFenbach, M.D., late Naturalist to the New Zealand Company. In 

 Two volumes 8vo. London, John Murray, Albemarle Street. 1843, 

 From John ifurraij, Esq., Albemarle Street, London. To those who wish 

 to become acquainted with this interesting country iii a statistical, commercial , 

 and natural-historical point of vieiv, we paniciddrly recdmmend this valuable 



V'01-k. 



